Since the implementation of ARKit 1.5, it is possible using image detection.
See here for a guide on medium by Epic’s Joe Graf: ARKit 1.5 Image Detection in UE4 4.20 | by Joe Graf | Medium
For current ARCore support, see here: Unreal için Hızlı Başlangıç | ARCore | Google Developers
(for ARCore notice, that the newer moving Augmented Images feature since Version 1.9 is not available in Unreal Engine. Sadly Unreal Engine uses ARCore 1.6 in version 4.22 and ARCore 1.7 in 4.23.)